Parasites, Hosts and Diseases

"Hwan-Sik Hwang"

Brief Communications

Comparison of Seropositivity to Trichomonas vaginalis between Men with Prostatic Tumor and Normal Men: Jung-Hyun Kim, Hong-Sang Moon, Kyu-Shik Kim, Hwan-Sik Hwang, Jae-Sook Ryu, Sung-Yul Park; Korean J Parasitol 2019;57(1):21-25.
Published online February 26, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.1.21

Abstract
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Trichomoniasis is the most common curable sexually-transmitted infection. Most Trichomonas vaginalis-infected men are asymptomatic and can remain undiagnosed and untreated, and this has been thought to result in chronic persistent prostatic infection. Chronic inflammation is regarded as the major factor in the pathogenesis and progression of benign prostatic hyperplasia (BPH) and prostatic cancer (PCa). The aim of this study is to identify seropositivity to T. vaginalis in men with prostate tumors (BPH or PCa) visited to Hanyang University Hospital. A total of 183 men were enrolled between October 2013 and November 2014. They consisted of 139 with BPH (mean age: 64.0 ± 0.07) and 44 with prostate cancer (mean age: 73.3±0.18). We carried out ELISA to identify the seropositivity to T. vaginalis. Mixed lysate antigen extracted from 8 strains of T. vaginalis was used in the ELISA. Also 58 male outpatients visited to Health Promotion Center in Hanyang University Hospital were evaluated for comparing group. As a results, seropositivity to T. vaginalis in patients with prostatic diseases was 19.7% (BPH: 18.7%, PCa: 22.7%) and it was significantly higher than the 1.7% of the comparing healthy group (P = 0.001). Therefore, prostatic tumor showed higher seropositivity against T. vaginalis than normal men. As far as we know, this is the first report about seroprevalence in prostatic tumor in Korea.

Citations

Citations to this article as recorded by

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Seroprevalence of toxoplasmosis in the residents of Cheju island, Korea: Hyun-Jong Yang, Kwang-Nam Jin, Yong-Keun Park, Seong-Chul Hong, Jong-Myon Bae, Sung-Hee Lee, Hyun-Sik Choi, Hwan-Sik Hwang, Young-Bae Chung, Nam-Seok Lee, Ho-Woo Nam; Korean J Parasitol 2000;38(2):91-93.
Published online June 30, 2000; DOI: https://doi.org/10.3347/kjp.2000.38.2.91

Abstract
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This study was performed to evaluate the epidemiological status of toxoplasmosis among the residents of Cheju island. The sera of local students from 18 high schools (boys 2110, girls 2460) and those of adults (474 admitted to Cheju Chungang General Hospital) were collected and checked for the IgG antibody titers against Toxoplasma gondii. Serum samples collected from both the students and adults showed sero-positive rate of 5.5% and 12.9%, respectively. Although the rates were not significantly different between the sexes (5.4% for the boys and 5.5% for the girls attending school), the geographical difference showed a significant difference between the urban (4.6~6.9%) and rural areas (5.6~8.8%) (p<0.05). Based on the high positive rates, it should be necessary to control toxoplasmosis in Cheju island.

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